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Corn Gluten Organic Fertilizer 8-0-0 - 40 lbs

Item #: CG800-40

Our price: $69.95


Our Corn Gluten Fertilizer is the only OMRI-certified organic and non-GMO corn gluten available on the market. Apply year-round to fertilize lawns and shrubs while preventing weeds from emerging. Your lawn will also develop deeper roots and require less watering. read more

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Lead time: 1 Business Day

Our Price: $69.95


Corn Gluten contains 100% corn gluten meal, a naturally occurring substance, which inhibits the growth of a seed's tiny feeder roots. This causes the seedlings to die before they germinate. Since most weeds germinate by seed corn gluten will kill the seeds before they sprout.

Corn Gluten offers a non-toxic, yet effective alternative to chemical-based weed and feed products for weed control in lawns and gardens.

Features & Benefits:

  • Organic fertilizer feeds lawns naturally
  • Helps build strong turf
  • Use for pre-emergent weed control
  • Apply by hand or using a spreader
  • Safe and environmentally friendly
  • Meets National Organic Program standards
  • OMRI certified for organic use
  • Made in the USA

Corn Gluten as Fertilizer

As a plant food, corn gluten has a N-P-K ratio of 8-0-0. It will fertilize your lawn, and prevent the growth of new weeds. Because it prevents seeds from sprouting, make sure you wait 60 days after application before spreading grass seed. Corn Gluten can also be used to fertilize shrubs and transplants. As a fertilizer, corn gluten can be applied at any time of year. The nitrogen releases slowly over a 3-4 month period after application.

Guaranteed Analysis:

Total Nitrogen (N): 8%. Water-insoluble nitrogen: 7%. Nutrients for this product are derived from 100% Non-GMO Corn Gluten Meal, and contain no animal manure or fillers.

To Prevent Weed Growth:

As a weed suppressant, corn gluten acts as a natural "pre-emergent" - it inhibits seed germination by drying out a seed as soon as it begins to sprout. These qualities make corn gluten an ideal 'weed n feed' product.

To take advantage of its weed-prevention properties, corn gluten must be applied before weed seeds germinate. Apply in early spring before the weeds begin to sprout, as a general rule, around the time when the forsythia, daffodils and early spring bulbs are blooming. Apply again to lawns in the fall. Corn gluten is also useful when transplanting vegetables and shrubs. Apply immediately after transplanting to prevent weeds from sprouting through the enriched soil and competing with your transplants.

Corn Gluten controls common broadleaf weeds:

  • Dandelions, Barnyardgrass, Curly Dock, Green Foxtail, Orchardgrass, Shattercane, Purslane, Wooly Cupgrass, Giant Foxtail, Lamb's Quarters, Buckhorn Plantain, Quackgrass, Crabgrass, Velvetleaf, Annual Bluegrass, Creeping Bentgrass, Black Nightshade, Black Medic, Redroot Pigweed, Catchweed Bedstraw, Clover, and more

Safe for people and pets

Our OMRI Certified Organic Corn Gluten Meal is derived from 100% Non-GMO corn where no commercial fertilizers, pesticides or fungicides are applied. No neonicotinoids. People and pets can use the lawn immediately after application. It will not harm beneficial insects, soil organisms, ponds or stream life.

How To Use:

Initial treatment: Apply 20 lbs per 1,000 square feet of lawn, garden or flowerbed area. Subsequent treatments: Apply 30 lbs per 5,000 square feet. Apply up to 500 lbs per acre for commercial farming use. For best results, apply twice a year in spring and fall. If using for pre-emergent weed control, the timing of the spring application is important. When applying corn gluten in the fall, do before winter annuals emerge, and in the spring before winter annuals come out of dormancy and to treat the summer annuals that will begin to emerge.

Corn gluten can be broadcast by hand or using a spreader. You can use a drop spreader or a broadcast spreader for ligher applications.

Apply corn gluten at suggested rates and leave for 24-48 hours without watering (preferably with no rain in the forecast for 48 hours). If it does not rain within 48 hours of application, water it in with approximately 1/4 inch of water, or water lawn with a soaking type rainfall. The point of not watering it right away is to begin slow breakdown, so if heavy rain comes it doesn't wash away. Allowing for a slow crumbing effect helps keep it in place.

Notes on Use from Dr. Nick Christians at Iowa State University:

Corn gluten meal works by inhibiting the root formation of germinating plants. It generally does not inhibit the roots of mature plants or transplants until you reach very high rates (80 pounds/1000 square feet or higher). It should be applied before germination of the weeds. The weed will germinate and usually forms a shoot, but does not form a root. After germination, a short drying period is needed to kill the plants that have germinated but have not formed a root. Timing is critical. If it is too wet during germination, the plants will recover and form a root (this is also true of chemical pre-emergent herbicides).

As a pre-emergent, corn gluten will remain effective for 5-6 weeks following germination.

Corn gluten does not work well with seeded garden crops unless they are seeded deeply. Transplants or mature plants generally work well. Some growers put down a band, work it into the upper inch of soil, and then put the transplant in the band.

In garden and crop production, growers generally work out their own system, depending on their understanding of the crop they are growing and the weeds they are trying to control.

For bulk orders, please contact

100% Satisfaction Guarantee

We want you to be completely satisfied with every purchase you make. If you are in any way dissatisfied with a product you ordered, we'll exchange it, replace it or refund your money within 30 days of purchase. Simply email us the problem, and we'll take care of you. Certain products have extended warranties (up to 50 years!) that are listed on the particular product page. Please call us at 1-888-451-6752 if you need further clarification.

Additional Information

Weight 40 lbs.
Coverage 2000 square feet
Key Feature Organic nitrogen fertilizer (8-0-0) with natural preventative pre-emergent weed control properties. Non-GMO corn gluten meal.
Origin Made in the U.S.A.

Shipping Information

Shipping Details:
Insured against damage or loss while in transit
This Product Ships To:
US Lower 48
Ships Via:
Ground Only (No express)

Questions about the Corn Gluten Organic Fertilizer 8-0-0 - 40 lbs

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  • From Di at 7/15/10 8:35 PM
    • does this KILL existing dandelions and clover and broadleaf?
      how much would I need to purchase for 2 acres?
    • Corn gluten is a pre-emergent - it kills weeds before they can sprout. It will not kill existing weeds in your lawn. A 20 lb. bag will cover 1000 sq.ft. of lawn.
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  • From Jim at 8/28/10 10:00 AM
    • Can this be applied in the fall (Michigan) and be effective the following spring?
    • The recommended seasonal applications for corn gluten are spring and fall. Corn Gluten Meal is effective as a pre emergent for about 6 weeks, providing the soil is dry after application. After that is becomes a fertilizer. Since, generally, fall is cooler and moister than late spring, applying CGM in the fall, for weed suppression, would not work as well as it would in late spring.
    • Do you find this question helpful?  Yes  No
  • From Dave at 11/29/10 7:01 AM
    • So let me see if I understand this correctly.Corn gluten is only a pre-emergent as long as it does not get wet?

    • Corn gluten meal works by inhibiting root formation in weeds at the time of germination. It doesn't inhibit roots of mature plants or transplants unless it is used at a very high rate of 80 pounds/1000 sq. ft. or more. Weeds germinate and form a shoot, but no root, inhibiting growth. A short drying period is required after germination, because too much water may allow the plants to recover and form roots.

      Timing is the key to success when using corn gluten meal. It should be applied before the targeted weed emerges above the soil. Since a drying period is required after application, you should make sure no rain is forecast for a few days after application.
    • Do you find this question helpful?  Yes  No
  • From John at 3/21/11 9:54 AM
    • How long after applying corn gluten do I have to wait before sowing grass seed?
    • Make sure you wait 60 days after application before spreading grass seed.
    • Do you find this question helpful?  Yes  No
  • From Jaime at 3/29/11 2:20 PM
    • Do you use a broadcast spreader with this and is so, what setting should be used?
    • Corn gluten can be broadcast by hand or by using a spreader. The spreader setting depends on the brand of spreader. You can tell pretty easily once you start spreading if the setting is too high or low.
    • Do you find this question helpful?  Yes  No
  • From Doug Boone at 4/6/11 9:46 AM
    • I have seen dogs eat corn gluten organic fertilizer. Is the product safe for dogs to eat?
    • Corn Gluten Organic Fertilizer is safe should the dog eat any of it. However, it's a waste of good fertilizer. If possible, try to keep your dogs away from the fertilized area for 48 hours after applying the corn gluten. After the drying period, the area should be wetted. This breaks down the granules and the dog will be less likely to try to eat it.
    • Do you find this question helpful?  Yes  No
  • From Diana Palumbo at 5/8/11 8:57 AM
    • I live on Long island and would like to clarify a schedule for application. If I plan on seeding my lawn in the fall I assume I would do that first in Sep? Would I then wait 60 days to apply the corn gluten meal? And then reverse the process in the spring? We are trying to build our lawn and kill the dandelions and crabgrass that are taking over. Thanks
    • Yes, you have the right idea with regards to scheduling corn gluten application. The fall application is intended to suppress hardy over-winter weeds. The spring application is more important because most weeds germinate in late winter and early spring. Your plan to seed in early September will give your new lawn time to get established, so you can focus on the weeds in spring. If you wait to seed until spring, it's a tigher window to try to supress weeds and still leave time for the new grass seeds to germinate and sprout.
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  • From cindi at 11/13/11 9:33 PM
    • I have a greenhouse that I am trying to suppress weeds in.. Is this product safe to use in this emvironment
    • Yes, our Corn Gluten Organic Fertilizer is entirely safe for use in greenhouses.
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  • From Jan at 3/1/12 2:14 PM
    • As non-GMO corn meal, is this product acceptable to use in certified organic gardens? Thanks?
    • Yes. this product is acceptable for certified organic gardens.
    • Do you find this question helpful?  Yes  No
  • From Susan at 3/12/12 7:21 AM
    • Is this product safe to use around already existing plants (i.e. raspberries, strawberries, other ornamental flowers in beds)?
    • Yes, this product is safe to use around any existing plants.
    • Do you find this question helpful?  Yes  No

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